freund



2 Sheets-Sheet 1. G. FREUND.

SAFETY SHBLL'FOR BLASTING.

(No Model.)

w.. I l F INVENTOR MQW ATTORNEYS.

Patented Ja.11.29, 1884.

WITNESSB (No Mo'del.) 2 Sheets-Sheet 2.

v G. EEEUNE.

SAFETY SEEEE EOE BLASEING.

NOEQEME.

Patented Jan. 29, 1884.

'INVENTOE d? WTNESSES ATTORNEYS.

N. PErEns. Phomuuwgmpm, wnshmgxm D. C.

llrurnn Sterns PATENT Ottica.

GEORGE FREUND, OF DURANGO, COLORADO.

SAFETY-SHELL'FOR BLASTING.

SPECIFICATION forming part of Letters Patent No. 92,642, dated Januaryi9, 1854.

Application filed Juncll, lSSQ. (No model.)

.T0 all whom, it '1n/ty concern-.-

Be it known that I. Gnonen FREUND, of Durango, in the county of La Plataand State of Colorado, have invented a new and useful Improvement inSat'ety-Sl'iells i'or Blasting, of which the following is a full, clear,and exact description.

My invention relates to safety-shells ot' the character shown in theLetters Patent granted to Reed and Freund, February 27, 1883, andnumbered 273,156, for use with high explosives, the object being tosecure safety in the handling of the material, the tamping of thecharge, and in the connection ot' the fuse to the stick, candle, orother form of explosive material.

The present invention consists in certain novel forms of constructioinashereinafter de scribed and claimed.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, the figures in which from l to la representsectional views of safety-shells, various modifications being shown ashereinafter specilied; and Figs. l5 and 16 are sectional elevations ot'one of the safety-shells and its threaded tiring-pin, respectively,showing them detached.

In all the iigures, A represents the shell, which is made of sheet metalor any suitable material in cylindrical or other form, and of anydiameter or size suitable to the sticks, candles, or other forms of theexplosive material that are used.

B is a nozzle or tube formed upon the shell for receiving the fulminateand for connection of the fuse.

In Fig. 1 the shell A with its nozzle or tube B are both formed in onepiece, and both screw-threaded internally and externally. rlhe threadupon the shell is to facilitate its attachmentto the explosive charge,the shell being screwed upon the stick or candle, so that a tirin andreliable connection is made between the two. The thread upon the nozzleB is to hold the fuse, which may be screwed either upon or into the saidnozzle, so that it is held securely in place, and the screw-thread maybe made either right or left handed. The fulminating material shown at ais contained in the lower end ofthe nozzle B, and abovethe straightportion of the nozzle that is made to receive the i'ulniinate is a neckor annular' shoulder, b, that prevents any Contact between the end ofthefuse and the l'ulminate orthe fullninatecap, as illustrated in Fig. 2,which shows the fuse in place and a cap inserted.

In Fig. 3 the nozzle B is formed upon the side of the shell A, extendinginward to receive a threaded tiring-cap, d, to which the fuse e isattached. This shell is made with a flat base, and the object of placingthe nozzle at one side is to make room for the tamping or filling.

In Fig. 4 the shell is substantially the same as in Fig. 3, except thatthe nozzle I3 extends across the entire diameter ot' the shell, so thatwhen the screw-threaded cap is inserted a vacant space is left betweenits end and the end of the nozzle.

rIhe shell shown in Fig. 5 is the same as that in Fig. 2, except thatthe end or base is made in rounded form, so as to more readily resistthe blows in the tamping operation.

Figs. 6 and 7 show shells with the nozzle at one side, and with the endofthe shell convex in Fig. (i and concave in Fig. '7.

The shell shown in Fig, S is intended to receive a charge at each end,each end being internally and externally threaded, and the nozzle Bformed at its mid-length to receive the threaded cap d and fuse c. Thenozzle in this case extends through or across the inner space ot' theshell. Fig. 9 is the saine, except that the nozzle extends only partlyinto the shell.

In Fig. l0 al double shell is shown with a nozzle, B, that is threadedto receive the end of the fuse, and the fulminating material is placedin the nozzle without the use of a cap, the neck b being provided, asshown in Fig. l, to preventany contact between the fuse and thefulminating material.

In Fig. Il a double shell is formed by two shells or sections, A A',screwed one upon the other, the nozzle B being formed upon the end ofone of the sections.

In Fig. l2 a double shell is formed by the two sections A A', connectedby a central section or thimble, f, which is externally and in ternall ythreaded upon one end and plain upon t-he other end; or, if desired, themiddle section may be screw-threaded on each end, as found. mostconvenient.

In Fig. 13 the shell A and its nozzle B are formed With internalthreads, only their outer surface being plain and smooth, and around thenozzle Bis iittcd a Wad, m, of leather, felt, rubber, or other suitablematerial. The Wad gives additional safety in the tamping of the charge,as the elasticity of the wad will resist the blows of tamping andprevent concussion.

In Fig. 14c the nozzle is covered by a tube, n, and the threaded shell Ais also provided Witha cover, o.

In Fig. l5 is shown a shell similar to those shown in Figs. land 2, andadapted for receiving the threaded Iiring-cap d shown in Figs. 3 and 4and separately in Fig. 16.

It will be understood that a shell in any of the forms named is to beused according to the 4circumstances or the character of the work beingdone. I do not limit myself to a shell in any of the forms shown, as thedifferent features may be combined together and arranged as found mostconvenient and desirable.

I do not abandon or dedicate to thepublic any patentable features setforth herein and not hereinafter claimed, but reserve the right to claimthe same either in a reissue of any patent that may be granted upon thisapplication or in other applications 'lor Letters Patent that I maymake.

Having thus described my invention, I claim as new and desire to secureby Letters Patent,-

l. A screw-threaded blasting-shell having a screwfthreaded nozzle ortube, substantially as herein shown and described.

2.' In safety-shells, the tube or nozzle B, for receiving a i'use,formed with an annular inwardly-proj ecting shoulder or neck, b,forseparating the fuse from the fulminate fulminatecap, substantially asherein shown and described.

3. A screw-threaded blasting-shell having a screw-threaded nozzle, incombination with a threaded Iiring-cap, substantially as herein shownand described. y

.4. A screw-threaded blasting-shell formed With a screw-threaded nozzleor tube at one side, substantially as herein shown and de scribed. i

5. A double screw-threaded shell for blasting, formed with ascrew-threaded tube or nozzle at its mid-length to receive afuse forring charges in both ends of the shell, substantially as shown anddescribed.

6. rllhe combination, in a blastingshell, of the screw-threaded sectionsA A', `provided with a screw-threaded nozzle or tube, B, substantiallyas shown and described.

GEORGE FREUND.

Vitnesses:

O. F. BOYLE, GEO. W. MELVILLE. l

